{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:YQD3DPAJ5QYWMU6FAN4UB55HVB","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"386c96d0a23af1ce6e000c5cecd9f37c342f04163e07530c88881d910d61ab4c","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-09-17T14:37:40Z","title_canon_sha256":"9eed241635df73c3f743d80277a05c122ea740de5a3958173150e0777b9c1fdc"},"schema_version":"1.0","source":{"id":"1809.06246","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.06246","created_at":"2026-05-17T23:58:03Z"},{"alias_kind":"arxiv_version","alias_value":"1809.06246v1","created_at":"2026-05-17T23:58:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.06246","created_at":"2026-05-17T23:58:03Z"},{"alias_kind":"pith_short_12","alias_value":"YQD3DPAJ5QYW","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"YQD3DPAJ5QYWMU6F","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"YQD3DPAJ","created_at":"2026-05-18T12:33:04Z"}],"graph_snapshots":[{"event_id":"sha256:f9c4ccd8f2a9193c4c86275439f4c802a04f82032475a905c4449ea0ab310828","target":"graph","created_at":"2026-05-17T23:58:03Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We explore deformations of finite chains of independent fermions which give rise to large correlations between their extremes. After a detailed study of the Su-Schrieffer-Heeger (SSH) model, the trade-off curve between end-to-end correlations and the energy gap of the chains is obtained using machine-learning techniques, paying special attention to the scaling behavior with the chain length. We find that edge-dimerized chains, where the second and penultimate hoppings are reinforced, are very often close to the optimal configurations. Our results allow us to conjecture that, given a fixed gap,","authors_text":"Hern\\'an Santos, Javier Rodr\\'iguez-Laguna, Jos\\'e E. Alvarellos","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-09-17T14:37:40Z","title":"Engineering large end-to-end correlations in finite fermionic chains"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.06246","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:9880187f28fcf766c35dd7b4080497d8f1dc3353ad20dca94d3f23704337ed40","target":"record","created_at":"2026-05-17T23:58:03Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"386c96d0a23af1ce6e000c5cecd9f37c342f04163e07530c88881d910d61ab4c","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-09-17T14:37:40Z","title_canon_sha256":"9eed241635df73c3f743d80277a05c122ea740de5a3958173150e0777b9c1fdc"},"schema_version":"1.0","source":{"id":"1809.06246","kind":"arxiv","version":1}},"canonical_sha256":"c407b1bc09ec316653c5037940f7a7a843a1514595498f75479f668624ee3695","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c407b1bc09ec316653c5037940f7a7a843a1514595498f75479f668624ee3695","first_computed_at":"2026-05-17T23:58:03.809527Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:58:03.809527Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"j5OP8fGQQuGYW8sZDc+XM6SSAeRlnmjF7zaUUA4U17mDC4aldCFeXW45FfKJU/2dqILb7dPMVCbrQp0UaalIAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:58:03.809937Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.06246","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9880187f28fcf766c35dd7b4080497d8f1dc3353ad20dca94d3f23704337ed40","sha256:f9c4ccd8f2a9193c4c86275439f4c802a04f82032475a905c4449ea0ab310828"],"state_sha256":"f5855c93a186ef3315369f519c3573bf52623b7295103a6d21cf33109f2cf096"}